Hey Viper and Randy, as I understand, you want a power supply that is 20 - 25 times the voltage of your motor which would be upwards of 60 volts. I happen to have found a very nice unregulated, toroidial power supply that is rated at 42 volts, 10 amps. Sounds perfect to me. Am I missing something?
For the current, you need to figure out how you are going to wire a motor, and add up all 3 of them. If I wire these in parallel (half-winding) mode, i'll be drawing all 4 amps that the motors are rated for. Take 67% of that number, add up all 3 motors, and I get about 8 amps. If I am figuring something wrong, please let me know.
As I am thinking about drives, I feel like I have to make a choice here.
1. wire the motors in series (full-winding) which uses half the rated current (2 amps), and go with a less expensive drive. This is not the most efficient way to run a stepper motor.
2. wire the motors in parallel (half-winding) which uses all 4 amps, and buy Gecko's. This is very efficient and gets more power for as given voltage.
I can't seem to find any other drives that are rated above 48 volts, 3 amps, and do bipolar and unipolar. I am dying to purchase something and get on with my project. Any help is appreciated.
Thanks guys,
Mini-Miller  |